Unfortunately it happens, you will find that it will only be seen when you photograph a dark object – but once you know it is there, you will be looking for it. I believe that dead pixels are actually quite common, you could get the camera in for a service and I believe Canon can map them and stop them showing, but not sure how much they would charge. The other option is to live with it. My first G11 had a dead pixel when bought new; I returned it for replacement without problem. 2 years down the road, I have a couple of hot (red) and dead (white) pixels on my G11 but they rarely can be seen and are very simple to clone out…